GB201810789D0 - O-QPSK symbol timing estimation - Google Patents

O-QPSK symbol timing estimation

Info

Publication number
GB201810789D0
GB201810789D0 GBGB1810789.6A GB201810789A GB201810789D0 GB 201810789 D0 GB201810789 D0 GB 201810789D0 GB 201810789 A GB201810789 A GB 201810789A GB 201810789 D0 GB201810789 D0 GB 201810789D0
Authority
GB
United Kingdom
Prior art keywords
symbol timing
timing estimation
qpsk symbol
qpsk
estimation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GBGB1810789.6A
Other versions
GB2575120A (en
GB2575120B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imagination Technologies Ltd
Original Assignee
Imagination Technologies Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Imagination Technologies Ltd filed Critical Imagination Technologies Ltd
Priority to GB1810789.6A priority Critical patent/GB2575120B/en
Publication of GB201810789D0 publication Critical patent/GB201810789D0/en
Priority to CN201910568372.7A priority patent/CN110661740A/en
Priority to EP19183107.2A priority patent/EP3588887B1/en
Priority to US16/457,950 priority patent/US10841139B2/en
Publication of GB2575120A publication Critical patent/GB2575120A/en
Application granted granted Critical
Publication of GB2575120B publication Critical patent/GB2575120B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
    • H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
    • H04L27/2078—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the phase change per symbol period is constrained
    • H04L27/2082—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the phase change per symbol period is constrained for offset or staggered quadrature phase shift keying
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
    • H04L27/2273—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals associated with quadrature demodulation, e.g. Costas loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0083—Signalling arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
GB1810789.6A 2018-06-29 2018-06-29 O-QPSK symbol timing estimation Active GB2575120B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB1810789.6A GB2575120B (en) 2018-06-29 2018-06-29 O-QPSK symbol timing estimation
CN201910568372.7A CN110661740A (en) 2018-06-29 2019-06-27 O-QPSK symbol timing estimation
EP19183107.2A EP3588887B1 (en) 2018-06-29 2019-06-28 O-qpsk symbol timing estimation
US16/457,950 US10841139B2 (en) 2018-06-29 2019-06-29 O-QPSK symbol timing estimation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1810789.6A GB2575120B (en) 2018-06-29 2018-06-29 O-QPSK symbol timing estimation

Publications (3)

Publication Number Publication Date
GB201810789D0 true GB201810789D0 (en) 2018-08-15
GB2575120A GB2575120A (en) 2020-01-01
GB2575120B GB2575120B (en) 2020-09-30

Family

ID=63143586

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1810789.6A Active GB2575120B (en) 2018-06-29 2018-06-29 O-QPSK symbol timing estimation

Country Status (4)

Country Link
US (1) US10841139B2 (en)
EP (1) EP3588887B1 (en)
CN (1) CN110661740A (en)
GB (1) GB2575120B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115834313A (en) * 2022-12-26 2023-03-21 成都秀为科技发展有限公司 GPU parallel computing QPSK coherent demodulation method based on frame structure

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11184272B2 (en) * 2018-12-13 2021-11-23 Silicon Laboratories Inc. ZigBee, thread and BLE signal detection in a WiFi environment
US11395188B2 (en) 2020-08-10 2022-07-19 Silicon Laboratories Inc. Fast signal identification of Bluetooth, ZigBee and other network protocols

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2797916B2 (en) * 1993-08-05 1998-09-17 日本電気株式会社 Carrier recovery circuit
US6556615B1 (en) * 1997-01-14 2003-04-29 Trimble Navigation, Ltd. Wide correlated optimized code multipath reduction
US6075408A (en) * 1998-12-30 2000-06-13 International Business Machines Corp. OQPSK phase and timing detection
KR100651505B1 (en) * 2004-08-30 2006-11-29 삼성전자주식회사 Apparatus and method for code tracker at multipath environment in ds-cdma communication system
US20070058752A1 (en) * 2005-07-29 2007-03-15 Faraday Technology Corp. Methods and systems for estimating sampling frequency offset of OFDM symbols
WO2009142557A1 (en) * 2008-05-19 2009-11-26 Nanoradio Ab Methods and an apparatus for estimating a residual frequency error in a communications system
US8743863B2 (en) * 2008-08-20 2014-06-03 Qualcomm Incorporated Method for ranging devices using code sequences in WLANs
US8976907B2 (en) * 2013-01-17 2015-03-10 Harris Corporation Bit synchronizer for detecting symbol timing error for high order modulation using a trajectory mid-point rotation and related methods
GB2511079B (en) * 2013-02-22 2015-05-27 Cascoda Ltd Transceiver
EP2903199B1 (en) * 2014-01-31 2019-03-06 Stichting IMEC Nederland Circuit for symbol timing synchronization
RU2667077C1 (en) * 2014-12-31 2018-09-14 Хуавэй Текнолоджиз Ко., Лтд. Method for processing signals and device
CN104614737B (en) * 2015-02-05 2017-02-22 北京航空航天大学 Dynamic signal simulation method of QPSK (Quadrature Phase Shift Keying) spread-spectrum satellite

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115834313A (en) * 2022-12-26 2023-03-21 成都秀为科技发展有限公司 GPU parallel computing QPSK coherent demodulation method based on frame structure
CN115834313B (en) * 2022-12-26 2024-04-26 成都秀为科技发展有限公司 GPU parallel computing QPSK coherent demodulation method based on frame structure

Also Published As

Publication number Publication date
CN110661740A (en) 2020-01-07
US10841139B2 (en) 2020-11-17
US20200007366A1 (en) 2020-01-02
EP3588887A1 (en) 2020-01-01
GB2575120A (en) 2020-01-01
GB2575120B (en) 2020-09-30
EP3588887B1 (en) 2021-01-20

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